Effect of clusterization algorithm with isospin-dependent nuclear charge radii parameterization on azimuthal angle dependence of elliptical flow

Abstract

The momentum constraint (P_clus) in Minimum Spanning Tree (MST) clusterization algorithm has been modified from isospin - independent (R_LDM) to isospin - dependent (R_RR) nuclear charge radii parameterization. The influence of MST with modified momentum constraint has been examined on the azimuthal angle dependence of dN/d (Cos2ϕ) (a signature of elliptical flow) for the reaction of <img src='http://nopr.niscair.res.in/jinfo/papsep3.gif' border=0><i>Ca</i> + <img src='http://nopr.niscair.res.in/jinfo/papsep3.gif' border=0><i>Ca</i> and <img src='http://nopr.niscair.res.in/jinfo/papsep4.gif' border=0><i>Au</i> + <img src='http://nopr.niscair.res.in/jinfo/papsep4.gif' border=0><i>Au</i> at incident energies of 50 and 400 MeV/nucleon by using isospin-dependent quantum molecular dynamics (IQMD) model. The study reveals that the influence of modified momentum constraint is significant for lighter colliding nuclei at low incident energies. Furthermore, this effect diminishes as the incident energy and composite system mass increases.